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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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GitHub Copilot
B
Devin
A
Genspark
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Cognition Labs' autonomous coding engineer.AI agent for deep search. Generates Sparkpages — full mini-reports.
Categorycodingagentsresearch
PricingFree (limited) + $10/mo Pro + $19/mo Business$500/moFree + $25/mo Plus
Best forTeams with GitHub already. Devs who don't want to change IDEs.Engineering teams offloading tickets. Ops/platform work.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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